A switch assembly for a sliding door of an urban rail vehicle

Abstract

The invention discloses a switch assembly of an urban rail vehicle sliding door. The switch assembly of the urban rail vehicle sliding door comprises a microswitch, an installation base board, a swing arm, a rotation shaft, a torsion spring, a stop pin and an idler wheel. The switch assembly of the urban rail vehicle sliding door swings under the impact of a switch impacting block of the sliding door, a switch cantilever falls down, the microswitch acts, and a door in-place signal or a lock in-place signal is sent out. In a reset state, the switch impacting block is disengaged, the cantilever resets through the torsion spring, the switch cantilever is lifted, and the microswitch recovers to an initial state. According to the switch assembly of the urban rail vehicle sliding door, a complicated stretchy guiding rod part is removed, the structure is simplified, hidden danger caused by the clamping phenomenon generated by the spring is removed, and the torsion spring replaces a compression spring to be reset, so that an line of action of force is identical with the movement track of a stressed object. The switch assembly of the urban rail vehicle sliding door has the advantages of being high in reliability, long in service life, novel in structure, ingenious in design and good in application prospect.

Description

technical field [0001] The invention relates to the technical field of urban rail vehicle components, in particular to a switch assembly for a sliding door of an urban rail vehicle. Background technique [0002] With the rapid development of urban scale, urban rail transit can facilitate people's travel and has been widely used. At present, the sliding doors of urban rail vehicles need to be opened and closed frequently. Only after all the sliding doors of the entire urban rail vehicle are closed in place, The urban rail vehicle can only be used. The switch assembly is used to detect whether the sliding door is closed in place. When the micro switch is triggered, the driver’s cab generates a closed in place signal to start driving. However, the existing switch assembly uses a compressed spring to drive the middle telescopic guide rod. The swing structure triggers the micro switch, but during this process, the spring is prone to stagnation, so that the micro switch cannot be ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to overcome the existing switch assembly, which is prone to spring sticking, so that the micro switch cannot be reset, causing the urban rail vehicle to fail and cannot continue to run, and the spring is prone to fatigue and fracture, resulting in the failure of the switch assembly , need to be replaced frequently, time-consuming and labor-intensive problems

Images